Kanishk Pal

How do you derive an equation of force for an object falling on top of a string-bed (tennis/badminton racket) ? assume that ball is rigid, strings are at fixed end-points. Strings however, are inelastic.

i tried to find the argument of [-1+sqrt(3)i] and i got:

tan^-1(sqrt3/-1)=(-π/3)

but the answers say (2π/3)....wtff how tho???

what happens when a proton enters a region of uniform magnetic field?

A 0.9030 gram sample of M(OH)2 was mixed with 20.00 mL of 2.000 M HCl and enough water added to make 100.0 mL of solution

M(OH)2(aq) + 2HCl(aq) 2H2O(l) + MCl2(aq)

A 10.00 mL aliquot of solution A was taken and titrated with 17.64 mL of 0.05121 M NaOH.

NaOH(aq) + HCl(aq) H2O(l) + NaCl(aq)

What is the metal, M? (Mg)

A 0.6181 gram sample of M2CO3 was taken and dissolved in enough water to make 100.0 mL of solution A. A 10.00 mL aliquot of solution A was taken and 25.00 mL of 0.1842 M HCl added.

M2CO3(aq) + 2HCl(aq) 2MCl(aq) + H2O(l) + CO2(g)

It took 19.90 mL of 0.1473 M NaOH to titrate the resulting solution.

NaOH(aq) + HCl(aq) H2O(l) + NaCl(aq)

What is the metal, M? (Li)

0.800g of a metallic oxide of the type MO was dissolved in 50.0cm3 1.00 mol/dm3 hydrochloric acid. The resulting solution was made up to 250cm3 with water and 25.0cm3 of this solution required 21.40cm3 of 0.100 mol/dm3 NaOH for neutralisation. Calculate the mass of the oxide reacting with 1 mole of HCl and hence the relative molecular mass of the oxide and relative atomic mass of M.

Sodium carbonate exists in hydrated form, Na2CO3.xH2O, in the solid state. 3.5 g of a sodium carbonate sample was dissolved in water and the volume made up to 250 cm3. 25.0 cm3 of this solution was titrated against 0.1 moldm-3 HCl and 24.5 cm3 of the acid were required. Calculate the value of x given the equation:

Na2CO3 + 2HCl 2NaCl + CO2 + H2O

The Sun has a mass of 1.99 * 10^30 kg. Jupiter has a mass of 1.90 * 10^27 kg and a mean radius of orbit around the Sun of 7.78 * 10^8 km. The speed that Jupiter travels in its orbit around the Sun is

what are the affect of ethics on a person's beliefs'?

do not relate to business and management. my topic is more concerned with health and artificial pregnancy.

My real life situation is IVF (in-vitro fertilization).

I want to make a knowledge question (open ended) relating to natural sciences and ethics.

PLS HELP

I conducted an experiment in which we had to measure and record centripetal force vs speed of object. We used primitive equipment such as a rope and a mass attached to both ends so that we just had to spin it around our heads.

Now the problem I have is to mention and explain what external factors may be affecting the experiment. (Primitive equipment cannot be one).

The experiment's aim was "Find the relationship between the centripetal force of uniform circular motion and the speed of the orbiting mass when the radius and the orbiting mass are held constant".

The circle was horizontal, kind of like a helicopter's. There were no angles involved (could be a basis of error). The mass which was changed was the mass underneath which acted like an anchor.

I conducted an experiment in which we had to measure and record centripetal force vs speed of object. We used primitive equipment such as a rope and a mass attached to both ends so that we just had to spin it around our heads.

Now the problem I have is to mention and explain what external factors may be affecting the experiment. (Primitive equipment cannot be one).

A geometric sequence is such that each term is equal to the sum of the two terms directly following it. Find the positive common ratio.

log_2 (x)+ log_4 (y)+ log_4 (z) =2,

log_3 (y) + log_9(z) + log_9 (x)=2

log_4 (z)+ log_16 (x)+log_16 (y)=2

the '_' (underscore) is base

Solve Simultaneously:

log_y (x) +log_x (y)=2

x^2+y=12